Internal-combustion engine



March 25, 1930. o. c. KREIS INTERNAL COMBUSTION ENGINE Filed June 15, 1928 2 Sheets-Sheet l I N VEN 7 OR A TTORNE Y.

Mgrch 25, 1930.

INTERNAL COMBUSTION ENGTNE Filed June 15, 1928 2 Sheets-Sheet 1 N VEN T0 12. Oscar C. mew

A TTORNE Y.

Patented Mar. 25, 1930 UNITED STATES PATENT OFFICE OSCAR O. KBEIS, OF DETROIT, MICHIGAN, ASSIGNOR T CONTINENTAL MOTORS CORPORATION, 013 DETROIT, 111ICIHIICtAN,v A CORPORATION OF VIRGINIA INTEBNAL-COMBUSTION ENGINE Application filed June 15,

This invention relates to internal combustion engines and refers more particularly to sleeve valve and like general types of engines. In engines of this general class it is customary to provide a cylinder head having a portion de ending within the cylinder and spaced there rom to provide a pocket accommodating movement of one or more sleeve valves or valve-controlling means. Heretofore it has been found that such structure has proven objectionable in that when the cylinder head is fastened to the engine structure, ordinarily to the cylinder upper end, slight inaccuracies in machining the parts gives rise to a tendency to bind the sleeve valve mechanism. In other Words it is difficult to accurately machine the parts, especially from the standpoint of production and at the same time provide a sleeve pocket accurately accommodating the sleeve valve or valves Without bindin A further disadvantage of structures known in this art is in the formation of what is commonly termed sludge in the vicinity of the sleeve pocket, this sludge accumulation being formed by carbon, water, and other residual materials which find their Way to the sleeve pocket in the normal operation of the engine. This sludge accumulation rusts the parts, decreases so the heat transfer qualities for the cylinder;

head, and generall acts detrimentally.

It is an object o my invention to provide means for overcoming the foregoing objectionable characteristics in the sleeve valve engine, my invention being of a simple nature readily accommodating itself to manufacture. By reason of my invention less accuracy is required in machining and fitting the c linder head and sleeve valve mechanism.

urthermore the tendency for accumulation ing the cylinder and associated parts;

1928. Serial No. 285,609.

Fig. 2 is a like view showing the sleeve valve mechanism approaching the close of the intake Fig. 3 is a like view showing the sleeve valve mechanism just closing, and;

Fig. 4 is a diagrammatic valve diagram illustrating the valve movement for the type of engine illustrated.

In order to illustrate my invention I have shown my improvements in connection with a single sleeve valve engine of the Burt-Mc- Collum type although it will be apparent that other types of sleeve valve engines are similarly adapted to my improvements. In this type of engine the cylinder 10 has seated thereon a cylinder head, 11, having a depending annular jacketed portion, 12, spaced within the cylinder to provide a sleeve pocket 13. The cylinder head, 11, may be clamped to the cylinder by bolts, 14?, according to standard practice. .The depending portion, 12, is made of smaller diameter than according to standard practice, so that it preferably does not in itself contact with the sleeve valve mechanism. I provide a bearin insert, 14, preferably flanged at 15 for seatmg on the cylinder end, this insert being held in adjustable position between the cylinder and cylinder head. The insert 14; is spaced at 13 from the c linder head portion 12 and will adjust'itsel to the sleeve valve mechanism, eliminating any binding of the sleeve valve or valves. The insert is preferably secured against rotation by slottin the flange 15 for accommodating a pin or owel 16, although the element 14 is free to move and adjust itself laterally. The lower end of the insert may be sealed by a ring 16 carried by the cylinder head, this ring permitting necessary lateral free adjustment of the lower end of the insert.

Where a single sleeve valve is employed of the Burt-McCollum type the sleeve 17 will work in its combined oscillating and reciproeating path 19 between the cylinder 10 and insert 14 or in the sleeve pocket 13. Such 90 cylinder intake and exhaust 20, 21 respec n tively.

In order to prevent the accumulation of sludge in the vicinity of the sleeve pocket structure I have provided means for automatically producing a breathing effect in the sleeve pocket which acts to keep the parts free of accumulations. Thus the insert, 14, has oneor more ports, 22, respectively positioned for cooperation with the sleeve intake ports 18 so that during at least a portion of the engine intake the suction produced by the downwardly travelling piston, 23, will produce a suction through ports 18 and 22 in the spaces 13, 13" preferably to either side of the insert 14.

Thus, as will be apparent from the several views, during the end of the suction or intake of the engine, the ports 18 and 22 communicate, these ports beingout of registration at other times during the engine cycle. In order to vent and eliminate sludge tendencies in the space 13, as well as the space 13, the insert has an additional port or ports 24 preferably adjacent the upper limit of travel of the sleeve 19 so that the suction Will periodically act in the space 13. I have illustrated one port 22 although one'or more of these ports for each sleeve port 18 maybe provided at will.

What I claim as my invention is:

1. In an internal combustion engine, a cylinder, a cylinder head depending within the cylinder, sleeve valve means working between the cylinder and depending cylinder head portion, means intermediate the cylinder and depending cylinder head portion accommodating itself to movement of the sleeve valve, and means preventing accumulation of deposits at one side of the first said means.

2. In an internal combustion engine, a cyl- 1nder, a cylinder head depending within the cylinder, sleeve valve means working between the cylinder and depending cylinder head portion, a ported element positioned intermediate the cylinder and depending cylinder head portion and accommodating itself to movement of the sleeve valve, and suction means acting in the vicinity of said first means preventing accumulation of sludge.

3. In an internal combustion engine, a cylinder, a cylinder head depending Within the cylinder, sleeve valve means Working between the cylinder and depending cylinder head port1on, a ported element positioned intermediate the cylinder and depending cylinder head portion and accommodating itself to movement of the sleeve valve, and means produced by the engine intake and cooperating.

with said port for effecting a suction in the vicinity of said first means. I

4. In an internal combustion engine, a cylinder, a cylinder head depending within the cylinder, sleeve valve means working between the cylinder and depending cylinder head portion, an element intermediate the cylinder and depending cylinder head portion accommodating itself to movement of the sleeve valve, said element extending substantiallythe length of the depending cylinder head portion, and means periodically producing a suction from the engine combustion chamber to the vicinity of the first said means.

5. In an internal combustion engine, a cylinder, a cylinder head depending Within the cylinder, sleeve valve means working between the cylinder and depending cylinder head portion, means intermediate the cylinder and depending cylinder head portion accommodating'itself to movement of the sleeve valve, and means preventing accummulation of deposits at opposite sides of the first said means.

6. A sleeve valve engine comprising a cyl-. inder, a piston, a cylinder head depending within the cylinder and spaced therefrom, at least one sleeve valve working in said space, an insert supported adjacent the outer end of the cylinder and being shiftable to elimiinate binding of the sleeve, and means acting to prevent sludge accumulations in the vicinity of said insert.

7. A sleeve valve engine comprising a cylinder, apistonfa cylinder head, de ending within the cylinder and spaced there rom, at least one sleeve valveworking in said space, an insert shiftable to eliminate binding of the sleeve, said sleeve and insert having cooperating ports for the removal of deposits in the vicinity of the insert.

8. A sleeve valve engine comprising a cyl inder, a piston, a cylinder head depending within the cylinder and spaced therefrom, at least one sleeve valve Working in said space, an insert-shiftable to eliminate binding of the sleeve, said sleeve and insert having ports adapted to register during the engine intake.

9. A sleeve valve engine comprising a cylinder, a piston, a cylinder head depending within the cylinder-and spaced therefrom, at least one sleeve valve working in said space, a sleeve bearing element intermediate. the cylinder and cylinder head, said sleeve and sleeve bearing element having cooperating passages to eliminate sludge accumul ations.

10. A sleeve valve engine comprising a cylinder, a piston, a cylinder head depending Within the cylinder and spaced therefrom, at least one sleeve valve working in said space, a sleeve bearing element intermediate the cylinder and cylinder head, said sleeve and bearing element having cooperating ports adapted to register during the engine intake.

11. A sleeve valve engine comprising a cylinder, a' piston, a cylinder head depending within the cylinder and spaced therefrom,

at least one sleeve valve working in said space, a sleeve bearing element between the cylinder and cylinder head providing spaces to each side of the element, said spaces being in communication, said sleeve and element having cooperating ports adapted to register during the engine intake.

12. A sleeve valve engine comprising a cylinder, a cylinder head, a iston, at least one sleeve. valve ported for intake and exhaust working between the cylinder and cylinder head, said cylinder having intake and exhaust ports, a piston, an element providing a compensating bearing for the sleeve said element being spaced from the cylinder head and provided with a port registering with th; sleeve intake port during the engine inta e. v

13. A, sleeve valve engine comprising a cylinder, a cylinder head, a piston, at least one the cylinder, sleeve valve means working between the cylinder and 'de ndln'g cyhnder head portion, a cylindrical e ement positioned intermediate the cylinder and depending cylinder head portion accommodatmg itself to movement of the sleeve valve, said element having its outer end flanged outwardly for seating on the cylinder upper end, and means preventing. accumulation of deposits atone side of the first said means.

In witness whereof, I hereunto subscribe my name this 23rd day of May, A. D. 1928.

OSCAR O. KREIS.

sleeve valvepo'rted for intake and exhaust working between the cylinder and cylinder head, said cylinder havin intake and exhaust ports, a piston, an element providin a compensating bearing for the sleeve, sai

element bein spaced from the cylinder head and provide with a rt registering with the sleeve intake port dliri-ng the engine intake, said element having a second ort spaced above the first said port and out o the range of movement of said sleeve intake port.

14. In a sleeve valve engine, a cylinder, 3.

cylinder head sleeve valve means intermediate the cylinderand head a shiftable insert supported adjacent the outer end of the cylinder and providing a compensating bearing for the sleeve valve means, and means preventm rotation of said insert.

15. n a sleeve valve engine, a cylinder, a

' cylinder head, sleeve valve means intermediate the cylinder and head, an insert flanged for seating on the cylinder end and providing a bearing for the sleeve valve means, and

means permitting lateral movement of the insert but preventing rotary movement thereof. I y

16. In a sleeve valve engine, a cylinder, 9.

cylinder head, a single sleeve valve ported for intake and exhaust and having a combined reciprocating and oscillating movement, said sleeve valve working between the cylinder and head, and a sleeve bearing ele-.

- cylinder, a cylinder head depending within Ill 

